Fabrication of Polypyrrole/Graphene Oxide Polymer Nanocomposites and Evaluation of their Optical Behavior for Optoelectronic Applications

PPy/GO composite materials formed of graphene oxide nanosheets and polypyrrole (PPy) were effectively prepared by polymerization fabrication method for optical energy applications. The measurements of TEM, XRD, SEM, FT-IR, and XPS showed that PPy/GO composites were successfully synthesized. The nanosheets GO were homogeneously joined into PPy as recorded by SEM images. TEM recorded that the GO nanosheets have different sizes ranging from 5 to 35 nm. The optical parameters, including the absorption edge, band gap, number of carbon clusters, and Urbach energies, were assessed by the UV-Vis method. The band gap reduced of 1.84 for PPy to 1.77 and 1.72 eV for PPy/GO-II and PPy/GO-III, and the absorption edge decreased from 1.78 for PPy to 1.60 and 1.50 eV, respectively. The optical susceptibility and refractive index were deduced for PPy and PPy/Go. Comparing the PPy/Go composites to pure PPy revealed a considerable enhancement in optical conductivity and the number of carbon clusters for PPy/Go. The outcomes of this research is the fabrication of potential flexible polymeric nanocomposite films with innovative physico-chemical properties for high-performance optoelectronics devices.